中文摘要：

采用液相催化相转化法,以Fe（Ⅲ）与Ga（Ⅲ）的共沉淀为前驱物合成了α-Fe（Ga）OOH微粒.探讨了镓离子的掺杂浓度和Fe（Ⅱ）离子用量等因素对合成α-Fe（Ga）OOH微粒的影响,并对产物进行了X射线衍射（XRD）、红外光谱（IR）、扫描电镜（SEM）、透射电镜（TEM）、电子衍射（ED）表征.结果表明：初始pH=9,nFe（Ⅱ）/nFe（Ⅲ）=0.02,nGa（Ⅲ）/nFe（Ⅲ）=0.18时,在沸腾回流条件下可制备出类多面体形的α-Fe（Ga）OOH微粒,镓离子的掺杂对α-FeOOH的形成起了形貌调控作用,电子衍射数据表明该α-Fe（Ga）OOH为单晶粒子.

英文摘要：

Polyhedral α-Fe（Ga）OOH particles were prepared by a catalytic phase transformation method using co-precipitate of Fe（Ⅲ） and Ga（Ⅲ） as a precursor. The effect of various factors such as the concentration of Ga（Ⅲ） ions, the level of Fe（Ⅱ） on the formation of these α-Fe（Ga）OOH particles was investigated. The product was characterized by XRD, IR, SEM, TEM and ED. The result shows that these α-Fe（Ga）OOH particles can be prepared at initial pH 9, molar ratio nFe（Ⅱ）/nFe（Ⅲ）=0.02 and nGa（Ⅲ）/nFe（Ⅲ）=0.18 under the condition of boiling and refluxing. Gallium incorporated into α-FeOOH particles takes an action to modulate the morphology of α-FeOOH. These α-Fe（Ga）OOH particles have been confirmed to be single crystal parti-cles by ED pattern.